A lightly worn Monica Bumpsuit Gown in Black fits like a glove to any XS size woman. The fit is super flattering for all stages of pregnancy and it's super cozy, stretchy, and warm. I've worn this in both California in the winter and Aspen all winter and it does the job in both places. It wears well with an over-sized teddy jacket or dressed up with a beautiful trench coat. Pair with some high-calf boots and you've got a very stylish look while pregnant! Stretchy polyester / spandex blend for ultimate stretch and flattering fit